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Influence of destructive bacteria and red clover (trifolium pratense L.) on the pesticides degradation in the soil

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Abstract

Lindane and DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) are pesticides from the group of persistent organic pollutants. These compounds, due to lipophilic properties, accumulate in tissues of organisms, are transmitted through the food chain and ultimately threaten human health. The long-term use of pesticides led to soil and water pollution. Microbial degradation of organochlorine compounds is the most eco-friendly method of polluted soil recultivation. Effective degradation of lindane and DDT soil pollution under the influence of introduced destructive bacteria was shown in the laboratory conditions. The concentration of lindane in the soil decreased by 75% and of DDT-by 56% in 30 days. The red clover seedlings increased pesticides degradation in the soil by 20%. The destruction of pesticides in soil was more intense than in the mineral medium. The DGGE analysis of microorganism associations introduced in contaminated soil was possible to follow the survival of the introduced associations. The use of microorganisms-destructors of organochlorine compounds, and plants as well as the biodegradation potential of the soil is a promising direction in the recultivation of polluted soils.

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Acknowledgements

The study was carried out as part of the state task of the Ministry of Science and Higher Education of the Russian Federation by the research topic “Molecular mechanisms of adaptation of microorganisms to environmental factors,” the registration number of the task is 01201353249.

Funding

We express our gratitude to the staff of the Laboratory of Molecular Microbiology and Biotechnology of the Institute of Ecology and Genetics of Microorganisms of the Ural Branch of the Russian Academy of Sciences, A.A. Pyankova and E.A. Shestakova for assistance in conducting the study.

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Correspondence to Elmira A. Nazarova.

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Nazarova, E.A., Nazarov, A.V., Egorova, D.O. et al. Influence of destructive bacteria and red clover (trifolium pratense L.) on the pesticides degradation in the soil. Environ Geochem Health 44, 399–408 (2022). https://doi.org/10.1007/s10653-021-00821-5

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  • DOI: https://doi.org/10.1007/s10653-021-00821-5

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